IIn his own words, Huang says, The libationer [rector] of the Imperial College should be chosen from among the great scholars of the day He should be equal in importance to the prime minister, or else be a retired prime minister himself. On the first day of each month the Son of Heaven should visit the Imperial College, attended by the prim minister, six ministers, and censors. The libationer should face south and conduct the discussion, while the Son of Heaven too sits among the ranks of the students. If there is anything wrong with the administration of the country, the libationer should speak out without reserve.

[…] and means for unfoaming the foamable material by collapsing the bubbles thereof.

It's only a short-distance drive from here.

to let down tools or cutlery